65663759672 has 48 divisors (see below), whose sum is σ = 144697286160. Its totient is φ = 27851475456.

The previous prime is 65663759657. The next prime is 65663759699. The reversal of 65663759672 is 27695736656.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 825428 + ... + 901475.

It is an arithmetic number, because the mean of its divisors is an integer number (3014526795).

Almost surely, 2^65663759672 is an apocalyptic number.

It is an amenable number.

65663759672 is an abundant number, since it is smaller than the sum of its proper divisors (79033526488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65663759672 is a wasteful number, since it uses less digits than its factorization.

65663759672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727020 (or 1727009 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 62.

The spelling of 65663759672 in words is "sixty-five billion, six hundred sixty-three million, seven hundred fifty-nine thousand, six hundred seventy-two".